磷酸可待因的分子结构式是<br />

A、[img=~/QImg/Tiles/TEST_286_1.gif]
B、[img=~/QImg/Tiles/YA22_45_33_
B、gif]
C、[img=~/QImg/Tiles/YA22_45_33_
C、gif]
D、[img=~/QImg/Tiles/YA22_45_33_
D、gif]
E、[img=~/QImg/Tiles/YA22_45_33_
E、gif]